Description
TRICONEX 9750-210grounded, and the Tricon is operating normally, the wiring and attached devices will notrelease sufficient energy to cause ignition in the specified flammable atmosphere.Termination Panels with Interposing RelaysTermination panels with interposing relays can be used with most digital output modules andare recommended for these applications:• Load currents greater than 2 amps• Field voltages greater than 115 VAC• Voltage-level conversions• Motor-starter circuit compatibilityInterposing TRICONEX 9750-210relay panels are available in these configurations:• 16-point commoned• 16-point non-commonedThe digital outputs of the interposing relays are not fault-tolerant. However, each relayprovides an auxiliary contact that can be fed into a digital input to send a loopback signal to thecontrol program. A user-written loopback check in the control program can ensure that the relayhas achieved its commanded state. TRICONEX 9750-210The loopback cable must be ordered separately.Each interposing relay panel provides the capability to common power and return through afactory-mounted bus-bar arrangement.Each interposing relay panel consists of:• A 7 in x 19 in (36 cm x 48 cm) rack-mountable panel with terminals for 16 digitaloutputs and 16 digital inputs.• TRICONEX 9750-210Two ELCO connectors mounted on the panel for connecting to digital input modulesusing digital input cables 9141-010, 9142-010, or 9143-010.• An EIA standard RS-310-C plate on which the termination panel is mounted.• A digital output module and a cable compatible TRICONEX 9750-210with the selected coil voltage.Bypass Panel for Digital InputsBypass termination panels can be used to connect digital inputs using a bank of 32 pre-wiredswitches. Bypass panels have a master keyswitch and terminals for redundant +24 VDC powersources. TRICONEX 9750-210Each input point contains an ON status indicator and can be energized only if themaster keyswitch is ON and the corresponding point switch is ON. Each point has a location fora user-definable label.Each bypass termination panel comes with one or two 10-foot (3-meter) cables for connectingthe termination panel to a Tricon backplane
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